The best zinc additive for engine oil is a chemical compound that provides protection to a number of different parts of a vehicle. It works by increasing the longevity of the lubricant and preventing oxidation.

How it works

The most common type of engine oil additive is zinc dialkyldithiophosphate (ZDDP). This molecule attracts metal surfaces and reacts with them to form a protective film. Zinc is a polar molecule, so it is naturally attracted to metals like iron and aluminum.

How it protects:

ZDDP is an extremely effective antiwear additive that protects the camshaft, lifters and valve train in engines with flat tappets or overhead cams. This sacrificial antiwear additive has been around for more than 70 years and is an easy way to keep your classic, hot rod or race car's engine protected against premature wear.

How to use:

The best way to add a ZDDP additive to your engine is to pour some into the tank of your engine oil. You should do this on a regular basis, and it will help your engine stay healthy and perform at its best.

What to look for in an engine oil additive:

An EPA-certified product is ideal because it will reduce emissions while also improving fuel economy. It should also contain both zinc and phosphorus chemicals. This is because the zinc chemical will improve performance while the phosphorus chemical will prolong the life of your engine. You should also check if the product is made in a safe manner and contains no harmful chemicals.